faker本地化不起作用

JellyBool ，我用的是5.3版本的，看的是你这个系列的视频：稍微深入Laravel 5 >> 本地化Model Factory

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Faker\Generator as FakerGenerator;
use Faker\Factory as FakerFactory;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //生成数据本地化
        $this->app->singleton(FakerGenerator::class, function() {
            return FakerFactory::create('zh_CN');
        });
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {

    }
}